Add changelog entry for 0.4.2
Add changelog entry for 0.4.2

untitaker/vdirsyncer,tribut/vdirsyncer,hobarrera/vdirsyncer,mathstuf/vdirsyncer,credativUK/vdirsyncer,tribut/vdirsyncer,credativUK/vdirsyncer,hobarrera/vdirsyncer,mathstuf/vdirsyncer,untitaker/vdirsyncer,untitaker/vdirsyncer